MIC29310-3.3BT Micrel Inc, MIC29310-3.3BT Datasheet

IC REG LDO 3.0A 3.3V TO-220-3

MIC29310-3.3BT

Manufacturer Part Number
MIC29310-3.3BT
Description
IC REG LDO 3.0A 3.3V TO-220-3
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC29310-3.3BT

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 16V
Voltage - Dropout (typical)
0.6V @ 3A
Number Of Regulators
1
Current - Output
3A
Current - Limit (min)
3A
Operating Temperature
0°C ~ 125°C
Mounting Type
Through Hole
Package / Case
TO-220-3 (Straight Leads)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
General Description
The MIC29310 and MIC29312 are low cost versions of
MIC29300 family low-dropout (LDO) regulators. Manufac-
tured on Micrel’s proprietary Super beta PNP™ process,
the MIC29310/2 is a 3A LDO regulator with very low-dropout
voltage (600mV over the full load) and low ground current.
Along with a total accuracy of ±2% (over temperature, line
and load regulation) these regulators feature very fast tran-
sient recovery from input voltage surges and output load
current changes.
The MIC29310 is available in fi xed 3.3V and 5V outputs
voltages; the MIC29312 has an adjustable output which can
be set by two external resistors to a voltage between 1.24V
to 15V. In addition, all versions are fully protected against
overcurrent faults, reversed input polarity, reversed lead
insertion, and overtemperature operation.
A TTL logic enable (EN) pin is available in the MIC29312 to
shutdown the regulator. When not used, the device can be set
to continuous operation by connecting EN to the input (IN).
The MIC29310/2 is available in the standard 3- and 5-pin
TO-220 and TO-263 packages with an operating junction
temperature range of 0°C to +125°C.
For applications requiring even lower dropout
voltage, input voltage greater than 16V, or an
error fl ag, see the MIC29300/29301/29302/
29303.
Typical Application
November 2006
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Fixed Regulator Confi guration
V
IN
MIC29310-x.x
IN
GND
OUT
V
OUT
1
Features
• Low cost versions of MIC29300 family
• Fast transient response
• 3A current over full temperature range
• 600mV dropout voltage at full load
• Low ground current
• Accurate 1% guaranteed tolerance
• “Zero” current shutdown mode (MIC29312)
• Fixed voltage and adjustable versions
Applications
• Processor peripheral and I/O supplies
• PC add-in cards
• High-effi ciency “green” computer systems
• High-effi ciency linear power supplies
• High-effi ciency switching supply post regulator
• Battery-powered equipment
V
On
Off
IN
3A Fast-Response LDO Regulator
* For best performance, total series resistance
(R1 + R2) should be small enough to pass
the minimum regulator load current of 10mA.
Adjustable Regulator Confi guration
MIC29310/29312
E N
IN
V
OUT
MIC29312
GND
= 1.240
OUT
ADJ
R 2
R 1
+ 1
R1*
R2*
MIC29310/29312
V
OUT

Related parts for MIC29310-3.3BT

MIC29310-3.3BT Summary of contents

Page 1

... The MIC29310 is available in fi xed 3.3V and 5V outputs voltages; the MIC29312 has an adjustable output which can be set by two external resistors to a voltage between 1.24V to 15V ...

Page 2

... Ordering Information Part Number Standard RoHS Compliant MIC29310-3.3BT MIC29310-3.3WT MIC29310-3.3BU MIC29310-3.3WU MIC29310-5.0BT MIC29310-5.0WT MIC29310-5.0BU MIC29310-5.0WU MIC29312BT MIC29312WT MIC29312BU MIC29312WU Note: 1. RoHS compliant with “high-melting solder” exemption. Pin Confi guration MIC29310-x.xBT/WT TO-220-3 (T) MIC29312-x.xBT/WT TO-220-5 (T) Pin Description Pin Number Pin Number ...

Page 3

... The device is not guaranteed to function outside its operating rating. Note 3. Devices are ESD sensitive. Handling precautions recommended. Note 4: Full Load current is defi ned as 3A for the MIC29310/29312. For testing, V Note 5: Dropout voltage is defi ned as the input-to-output differential when the output voltage drops to 99% of its nominal value with ...

Page 4

... Block Diagram IN Bias *EN On/Off Thermal Shut- down MIC29310/29312 MIC29310/29312 Reference 4 OUT O.V. I LIMIT 16V Feed- ADJ* back GND * MIC29312 only. November 2006 ...

Page 5

... TEMPERATURE (°C) 5 MIC29312 Line Transient Response with 3A Load, 100F Output Capacitance 200s/division I OUT C OUT MIC29312 Load Transient Response (See Test Circuit Schematic) 1ms/division 3A MIC29310-3.3 Dropout Characteristics 5.0 4 10mA LOAD 3.0 2.0 I LOAD 1.0 0 INPUT VOLTAGE (V) MIC29310/29312 = 3A = 100F = ...

Page 6

... INPUT VOLTAGE (V) MIC2931x Ground Current vs. Temperature 1.5A 10 OUT 5 0 -60 - 120 150 TEMPERATURE (°C) MIC29310-3.3 Output Voltage vs. Temperature 3.40 3.38 3.36 3.34 3.32 3.30 3.28 3.26 3 DEVICES 3.24 3.22 3.20 -60 - 120 150 TEMPERATURE (°C) MIC29312 Adjust Pin Current vs. Temperature 10mA ...

Page 7

... NPN regulators, especially when all toler- ances are considered. Minimum Load Current The MIC29310/2 regulators are specifi ed between fi nite loads. If the output current is too small, leakage currents dominate 7 × (1.02V ...

Page 8

... Note: This regulator has a minimum load requirement. “Standard” values assume the load meets this requirement. “Minimum Load” values are calculated to draw 10mA and allow regulation with an open load (the minimum current drawn from the load may be zero). MIC29310/29312 Where V is the desired output voltage. Figure 4 shows O component defi ...

Page 9

... Package Information November 2006 3-Pin TO-220 (T) 3-Pin TO-263 (U) 9 MIC29310/29312 ...

Page 10

... MIC29310/29312 5-Pin TO-220 (T) 5-Pin TO-263 (U) 10 November 2006 ...

Page 11

... November 2006 11 MIC29310/29312 ...

Page 12

... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify MIC29310/29312 + 1 (408) 474-1000 ...

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